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pico-imx6ul: Add Ethernet support

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Pico-imx6ul has a KSZ8081 Ethernet PHY.

Add support for it.

Signed-off-by: Diego Dorta <diego.dorta@nxp.com>
Acked-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Diego Dorta 2016-06-10 12:07:29 -03:00 committed by Stefano Babic
parent 618a85356c
commit 6d7aa51acc
2 changed files with 94 additions and 0 deletions
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84
board/technexion/pico-imx6ul/pico-imx6ul.c
View File

@ -16,6 +16,8 @@
#include <asm/imx-common/iomux-v3.h>
#include <asm/io.h>
#include <common.h>
#include <miiphy.h>
#include <netdev.h>
#include <fsl_esdhc.h>
#include <linux/sizes.h>
#include <usb.h>
@ -34,6 +36,87 @@ DECLARE_GLOBAL_DATA_PTR;
PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | \
PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define MDIO_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE | \
PAD_CTL_DSE_48ohm | PAD_CTL_SRE_FAST | PAD_CTL_ODE)
#define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE | \
PAD_CTL_SPEED_HIGH | \
PAD_CTL_DSE_48ohm | PAD_CTL_SRE_FAST)
#define ENET_CLK_PAD_CTRL (PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
#define RMII_PHY_RESET IMX_GPIO_NR(1, 28)
static iomux_v3_cfg_t const fec_pads[] = {
MX6_PAD_ENET1_TX_EN__ENET2_MDC | MUX_PAD_CTRL(MDIO_PAD_CTRL),
MX6_PAD_ENET1_TX_DATA1__ENET2_MDIO | MUX_PAD_CTRL(MDIO_PAD_CTRL),
MX6_PAD_ENET2_TX_DATA0__ENET2_TDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_ENET2_TX_DATA1__ENET2_TDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_ENET2_TX_CLK__ENET2_REF_CLK2 | MUX_PAD_CTRL(ENET_CLK_PAD_CTRL),
MX6_PAD_ENET2_TX_EN__ENET2_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_ENET2_RX_DATA0__ENET2_RDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_ENET2_RX_DATA1__ENET2_RDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_ENET2_RX_EN__ENET2_RX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_ENET2_RX_ER__ENET2_RX_ER | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_UART4_TX_DATA__GPIO1_IO28 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
static void setup_iomux_fec(void)
{
imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
}
int board_eth_init(bd_t *bis)
{
setup_iomux_fec();
gpio_direction_output(RMII_PHY_RESET, 0);
/*
* According to KSZ8081MNX-RNB manual:
* For warm reset, the reset (RST#) pin should be asserted low for a
* minimum of 500μs. The strap-in pin values are read and updated
* at the de-assertion of reset.
*/
udelay(500);
gpio_direction_output(RMII_PHY_RESET, 1);
/*
* According to KSZ8081MNX-RNB manual:
* After the de-assertion of reset, wait a minimum of 100μs before
* starting programming on the MIIM (MDC/MDIO) interface.
*/
udelay(100);
return fecmxc_initialize(bis);
}
static int setup_fec(void)
{
struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
int ret;
clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC2_MASK,
IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK);
ret = enable_fec_anatop_clock(1, ENET_50MHZ);
if (ret)
return ret;
enable_enet_clk(1);
return 0;
}
int board_phy_config(struct phy_device *phydev)
{
phy_write(phydev, MDIO_DEVAD_NONE, 0x1f, 0x8190);
if (phydev->drv->config)
phydev->drv->config(phydev);
return 0;
}
int dram_init(void)
{
gd->ram_size = imx_ddr_size();
@ -106,6 +189,7 @@ int board_init(void)
/* Address of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
setup_fec();
setup_usb();
return 0;

10
include/configs/pico-imx6ul.h
View File

@ -17,6 +17,16 @@
#define CONFIG_DISPLAY_CPUINFO
#define CONFIG_DISPLAY_BOARDINFO
/* Network support */
#define CONFIG_FEC_MXC
#define CONFIG_MII
#define IMX_FEC_BASE ENET2_BASE_ADDR
#define CONFIG_FEC_MXC_PHYADDR 0x1
#define CONFIG_FEC_XCV_TYPE RMII
#define CONFIG_PHYLIB
#define CONFIG_PHY_MICREL
/* Size of malloc() pool */
#define CONFIG_SYS_MALLOC_LEN (16 * SZ_1M)